[Gmsh] Airfoil meshing Naca 0012

[Emanuele T.]

Thanks for the answer and sorry for my newbie questions. I' m not yet able
to create an hole in the farfield. I created the two line loops and made a
plane surface using these two loop lines. When i try to mesh in 2d airfoil
is not recognize like a hole and there are cell inside it. How can i solve?
I tryed to change the characteristic length but nothing change. I attach my
new .geo file

Thanks again


2010/2/20 Eric Nutsch <ericnutsch at gmail.com>

> Emanuele,
>
>
> Well first you need to make 2 line loops, one for the airfoil and one
> for the farfield(in userguide)
> Then make a plane surface using the 2 loops.(userguide)
> You will then be able to mesh
> To control the mesh size use the characteristic length(userguide)
>
> If you want to then want to use a boundary layer you will be stuck the
> same place as I. It is easy enough to create a boundary layer with the
> extrude function, but I have yet to figure out how to attach it to a
> farfield mesh.
>
>
> Eric Nutsch
>
>
> On Sat, Feb 20, 2010 at 7:29 AM, Emanuele T. <nuovodna at gmail.com> wrote:
> > I attach my current .geo file
> >
> > 2010/2/20 Emanuele T. <nuovodna at gmail.com>
> >>
> >> Thanks for the tip. Now i have another problem. I prepared a .geo file
> >> with an airfoil in a circular box. I'd like to obtain a mesh like in
> >> attached picture. How can i realize this?
> >>
> >> 2010/2/19 Eric Nutsch <ericnutsch at gmail.com>
> >>>
> >>> Emanuele,
> >>>
> >>>
> >>> If by points you mean cells (for more resolution), you can use the
> >>> gmsh "characteristic length" variable (lots of info in the user
> >>> guide).
> >>>
> >>> If you actually want more points(not sure why) you would have to write
> >>> an interpolation script outside of gmsh (python for instance)
> >>>
> >>>
> >>> Eric Nutsch
> >>>
> >>>
> >>>
> >>> On Fri, Feb 19, 2010 at 12:15 PM, Emanuele T. <nuovodna at gmail.com>
> wrote:
> >>> > Hi, i wrote a mesh using naca 0012 points taken
> >>> >
> >>> > here
> http://www.soton.ac.uk/~jps7/Aircraft%20Design%20Resources/Sydney%20aerodynamics%20for%20students/panel2d/naca0012.dat
> >>> > I want to intensify the density of points near the leading edge and
> the
> >>> > trailing edge. How can i obtain this??
> >>> > Thanks
> >>> > _______________________________________________
> >>> > gmsh mailing list
> >>> > gmsh at geuz.org
> >>> > http://www.geuz.org/mailman/listinfo/gmsh
> >>> >
> >>> >
> >>
> >
> >
>
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